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var getLeftEdgeOfStaff = require('./get-left-edge-of-staff');
function layoutInGrid(renderer, staffGroup, timeBasedLayout) {
var leftEdge = getLeftEdgeOfStaff(renderer, staffGroup.getTextSize, staffGroup.voices, staffGroup.brace, staffGroup.bracket);
var ret = getTotalDuration(staffGroup, timeBasedLayout.minPadding)
var totalDuration = ret.totalDuration
var minSpacing = ret.minSpacing
var totalWidth = minSpacing * totalDuration
if (timeBasedLayout.minWidth)
totalWidth = Math.max(totalWidth, timeBasedLayout.minWidth)
var leftAlignPadding = timeBasedLayout.minPadding ? timeBasedLayout.minPadding/2 : 2 // If the padding isn't specified still give it some
staffGroup.startx = leftEdge
staffGroup.w = totalWidth + leftEdge
for (var i = 0; i < staffGroup.voices.length; i++) {
var voice = staffGroup.voices[i]
voice.startx = leftEdge
voice.w = totalWidth + leftEdge
var x = leftEdge
var afterFixedLeft = false
var durationUnit = 0
for (var j = 0; j < voice.children.length; j++) {
var child = voice.children[j]
if (!afterFixedLeft) {
if (child.duration !== 0) {
// We got to the first music element on the line
afterFixedLeft = true
durationUnit = (totalWidth + leftEdge - x) / totalDuration
staffGroup.gridStart = x
} else {
// We are still doing the preliminary stuff - clef, time sig, etc.
child.x = x
x += child.w + child.minspacing
}
}
if (afterFixedLeft) {
if (timeBasedLayout.align === 'center')
child.x = x + (child.duration * durationUnit) / 2 - child.w / 2
else {
// left align with padding - but no padding for barlines, they should be right aligned.
// TODO-PER: it looks better to move bar lines one pixel to right. Not sure why.
if (child.duration === 0) {
child.x = x + 1 - child.w
} else {
// child.extraw has the width of the accidentals - push the note to the right to take that into consideration. It will be 0 if there is nothing to the left.
child.x = x + leftAlignPadding - child.extraw
}
}
x += child.duration * durationUnit
}
for (var k = 0; k < child.children.length; k++) {
var grandchild = child.children[k]
// some elements don't have a dx - Tempo, for instance
var dx = grandchild.dx ? grandchild.dx : 0
grandchild.x = child.x + dx
}
}
staffGroup.gridEnd = x
}
return totalWidth
}
function getTotalDuration(staffGroup, timeBasedLayout) {
var maxSpacing = 0
var maxCount = 0
for (var i = 0; i < staffGroup.voices.length; i++) {
var count = 0
var voice = staffGroup.voices[i]
for (var j = 0; j < voice.children.length; j++) {
var element = voice.children[j]
count += element.duration
if (element.duration) {
var width = (element.w+timeBasedLayout) / element.duration
maxSpacing = Math.max(maxSpacing, width)
}
}
maxCount = Math.max(maxCount, count)
}
return { totalDuration: maxCount, minSpacing: maxSpacing}
}
module.exports = layoutInGrid;
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